Storm warning: Thailand’s weather is about to reign on your parade

The Meteorological Department of Thailand (TMD) issued a weather forecast for tomorrow, November 19, warning of thunderstorms and heavy rain in certain areas. Bangkok and central regions are expected to experience the most severe conditions, affecting 22 provinces in total.

An influx of moderately cold air from China is currently covering the upper northern region, the upper northeastern region, and the South China Sea. This, combined with easterly and southeasterly winds affecting the lower northern, northeastern, central, eastern, and upper southern regions, is set to bring thunderstorms and heavy rain to these areas.

TMD has updated the path of Typhoon Man-yi, advising that temperatures will drop by as much as 5 degrees Celsius (°C) from today until November 22.

Typhoon Man-yi, currently located east of the Philippines, is expected to pass over Luzon Island today before moving into the northern South China Sea. The storm is predicted to approach Hainan Island, China, between tomorrow and the following day, with a likelihood of weakening.

In the north, conditions will be cool with morning fog and thunderstorms expected in 20% of the area, particularly in Tak, Kamphaeng Phet, Phichit, and Phetchabun provinces. Temperatures will range from a low of 19 to 24°C to a high of 31 to 34 °C. Mountainous areas will experience cool to cold weather with temperatures dropping to between nine and 16 degrees Celsius. Northeasterly winds will blow at speeds of 10 to 20 kilometres per hour (km/h).

Cool mountainous weather

In the northeastern region, cool weather in the morning will give way to thunderstorms in 10% of the area, mostly in Loei, Chaiyaphum, and Nakhon Ratchasima provinces. After the rain, temperatures will fall by one to three degrees Celsius, with strong winds expected.

Temperatures will range from 20 to 23 °C to highs of 31 to 36°C. Cool to cold weather will prevail in mountainous areas, with temperatures dipping to 13 to 17°C. Winds will blow from the northeast at speeds of 10 to 30 km/h.

In the central region, 40% of the area will experience thunderstorms, with heavy rain in some areas, particularly in Saraburi, Ayutthaya, Ratchaburi, Nakhon Pathom, Samut Sakhon, and Samut Songkhram provinces. Temperatures will vary from 23 to 26 °C to highs of 30 to 34 °Cs, with northeasterly winds blowing at 10 to 20 km/h.

In the eastern region, 40% of the area will have thunderstorms, with heavy rainfall in some areas, notably in Nakhon Nayok, Chachoengsao, Chon Buri, and Rayong provinces. Temperatures will range between 23 to 26°C and 32 to 34°C. Easterly winds will blow at speeds of 10 to 30 km/h. The sea will have waves lower than 1 metre, but areas experiencing thunderstorms may see waves over 2 metres high.

In the southern region (eastern coast), thunderstorms are expected in 30% of the area, with heavy rain, particularly in Phetchaburi and Prachuap Khiri Khan provinces. Temperatures will range from 23 to 26°C to highs of 31 to 34°C. Easterly winds will blow at speeds of 10 to 30 km/h. The sea will have waves lower than 1 metre, but thunderstorms may cause waves to exceed 2 metres.

In the southern region (western coast), 30% of the area will experience thunderstorms, mostly in Krabi, Trang, and Satun provinces. Temperatures will vary from 24 to 26°C to highs of 33 to 35°C. Easterly winds will blow at 10 to 30 km/h. The sea will have waves lower than 1 metre, though thunderstorms may cause waves to exceed 2 metres.

In Bangkok and its surrounding areas, thunderstorms are expected in 40% of the area, with heavy rain in some places. Temperatures will range from 25 to 27°C to highs of 31 to 33°C, with easterly winds blowing at 10 to 20 km/h.